Observation of the ᴧ0 b → J/ψpπ− decay

R Aaij, B. Adeva, M. Adinolfi, A Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S Amato, S. Amerio, Y. Amhis, L {de La Fuente}, L. Anderlini, J. Anderson, R. AndreassenM. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M Artuso, E. Aslanides, G. Auriemma, R. J. Barlow, W. Barter, T. Bird, P. M. Bjørnstad, S. Borghi, D. Brett, J. Brodzicka, S. De Capua, G. Dujany, E. Gersabeck, M. Gersabeck, L. Grillo, C. Hombach, S. Klaver, G. Lafferty, A. McNab, C. Parkes, A. Pearce, S. Reichert, E. Rodrigues, P. Rodriguez Perez, LHCb Collaboration

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The first observation of the Cabibbo-suppressed decay V0 b → J/ψpπ is reported using a data sample of proton-proton collisions at 7 and 8TeV, corresponding to an integrated luminosity of 3 fb−1. A prominent signal is observed and the branching fraction relative to the decay mode V0 b → J/ψpK is determined to be B[Equations Found] A search for direct CP violation is performed. The difference in the CP asymmetries between these two decays is found to be [Equations Found], which is compatible with CP symmetry at the 2.2σ level.

    Original languageEnglish
    Pages (from-to)1-19
    Number of pages19
    JournalThe Journal of High Energy Physics
    Volume2014
    Issue number7
    DOIs
    Publication statusPublished - 2014

    Keywords

    • B physics
    • Branching fraction
    • CP violation
    • Flavor physics
    • Hadron-Hadron Scattering

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